Sortilin Is a Major Protein Component of Glut4-containing Vesicles

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Sortilin is a major protein component of Glut4-containing vesicles.

In fat and skeletal muscle cells, glucose transporter isoform 4 (Glut4) is translocated to the cell surface in response to insulin via a system of specialized recycling vesicles. Besides Glut4, these vesicles include the novel insulin-regulatable aminopeptidase, receptors for insulin-like growth factor-II/Man-6-phosphate and transferrin, and a glycoprotein with the molecular mass of 110 kDa. We...

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The luminal Vps10p domain of sortilin plays the predominant role in targeting to insulin-responsive Glut4-containing vesicles.

In fat and skeletal muscle cells, insulin-responsive vesicles, or IRVs, deliver glucose transporter Glut4 and several associated proteins to the plasma membrane in response to hormonal stimulation. Although the protein composition of the IRVs is well studied, the mechanism of their formation is unknown. It is believed, however, that the cytoplasmic tails of the IRV component proteins carry targ...

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The role of sortilin in the “Glut4 Pathway”.

ARTICLE HISTORY Received 9 October 2017 Revised 12 October 2017 Accepted 13 October 2017 ABSTRACT Sorting receptor, sortilin, is highly expressed in metabolically active tissues, such as brain, liver, skeletal muscle, and fat. Specifically in adipocytes, sortilin plays an important role in the “Glut4 pathway” by sorting the insulin-responsive glucose transporter, Glut4, in early endosomes and t...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 1997

ISSN: 0021-9258

DOI: 10.1074/jbc.272.39.24145